Lightweight alloy chest ascender designed to enhance vertical climbing efficiency. It can be used with a chest harness or shoulder straps to help maintain an upright posture. Enlarged, angled connection holes keep the device aligned with the body for improved comfort. When paired with a hand ascender, it forms an efficient multi-point climbing system. Simple to operate, it remains easy to use even with gloves on, and is compatible with 9–13 mm ropes.